An easy to use 2D HTML5 game engine written in TypeScript
Solar2D Game Engine main repository (ex Corona SDK)
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Stride (formerly Xenko), a free and open-source cross-platform C# game
Multi Theft Auto is a game engine
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A game engine powered by python and panda3d
Free game engine for development of desktop, mobile, and web games
Flax Engine, multi-platform 3D game engine
dhewm 3 main repository
scene-oriented, flexible 3D engine (C++, Python, C#, Java)
The ioquake3 community effort to continue supporting/developing id's
New Godot bindings for Swift
The Open Toolkit library is a fast, low-level C# wrapper for OpenGL
Descent 3 by Outrage Entertainment
Ct.js is a desktop game engine that makes learning programming fun
Recreation of the classic Grand Theft Auto III game executable
Multi-platform 2D and 3D game engine
Powerful, mature open-source cross-platform game engine for Python
3D Game engine with editor
Open-source engine for Heroes of Might and Magic III
Open game and rendering engine packed into a JavaScript framework
Multi-platform Engine for Desktop, XBOX (UWP) and Mobile games
Xash3D FWGS engine
The HTML5 Creation Engine